Flat-sheet-delivery mechanism for printing-presses.



l H. M. BARBER. FLAT SHEET DELIVERY MECHANISM FOR PRINTING PRESSES.

APELiCATION FILED SEPT-21,1915- 1,226,1 68. Patented M5 15, 1917.

2 SHEETS-SHEET I.

g an

WWW

idwewtor;

' STATES PATENT OFFICE.-

HOWAIRl) M. BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR TO 0. B.COTTRELIJ 8c SONS COMPANY, OF NEW YORK, N. Y., A CORPORATIONOF DELAWAREFLAT-SHEETDELIVERY MECHANISM FOR PRINTING-PRESSES.

. a citizen of the United States, and resident of Stonington, in thecounty of New London and State of Connecticut, have invented a new anduseful Improvement in Flat-Sheet Delivery Mechanism forPrinting-Presses, of which the following is a specification.

The object of this invention is to provide novel means for preventingthe sagging and falling ahead of the sheets in the delivery mechanism asthe sheets are being delivered; said means including a yielding devicetraveling with the endless delivery carrier and arranged to engage thetail end of a. sheet beingdelivered and press it against a stationarysheet support, which device as it rides off from the sheet support willdeflect the tail end of the sheet downwardly .as its head end isreleased by the delivery.

carrier grippers.

Means may be provided for adjusting the said stationary sheet supportand the said yielding device, one or both, to cause them to actsuccessfully on sheets of different lengths.

A practical embodiment of the invention is represented in theaccompanying drawings, in which,

Figure 1 is a longitudinal vertical sectio through so much of a hatsheet delivery mechanism as embodies my invention.

1 Fig. 2 is an enlarged detail plan view.

Fig. 3 is a longitudinal vertical section taken in the plane of the lineA-A of Fig. 2, and

Fig. 4: is a detail horizontal section, taken in the plane of the lineBB of Fig. 3.

In the embodiment shown in the accompanying drawings, the endlessdelivery carrier comprises the side chains 1. passing around thesprocket wheels 2. which endless delivery carrier is provided with oneor more sets of grippers 41. 5, arranged to engage the head ends of thesheets as the sheets are fed through the rollers 6, 7, on to the guides8 of the stationary sheet support, which guides exteiu part way alongbeneath the endless delivery carricr/ There may be any desired number ofthese guides 8, whiehguides are adjustably supported in brackets 9, 10.carried by Cl()SSl):ll'S 11, 12. of the machine. These guides may be ad-Specification of Letters Patent.

Patented May 15, 1917.

Application filed September 21, 1915. Serial No. 51,788.

justed forwardly and rearwardly if desired,

for sheets of different lengths, as for instance, by providing thebrackets 9, 10, with clamp screws 13, 14. The sheet receiving table isdenoted by 15, the front stops-by 16, and the back joggers by 17.Downwardly inclined front sheet guides 18 are supported from the arms19, carried by the cross-bar 2,0, for directing the head ends of thesheets on to the table as they are released by the grippers e1, 5. A cam21 is provided for controlling the operation-of the grippers at thereceiving end of the delivery carrier and a cam 22 is provided forcontrolling the operagrippers at the delivery end of I tion of the thecarrier.

The yielding-device for engaging the tail ends of the sheets andpressing them against the stationary sheet guide and for deflecting thetail ends of the sheets downwardly as the head ends are released by thegrippers and the tail ends leave the stationary support, is herein shownas comprising a pluralitv of spring-actuated rollers 23, one for eachstationary sheet guide 8. Each of idle rollers 23 is mounted on a studaxle 24 secured by a bolt 25 to the free end of a flat 8() spring arm26, the other end of which arm is secured by a bolt 27 to a stud 28screwed into a rigid arm 29 mounted on a cross-bar 30, the ends of whichcross-bar 30 are secured to the side chains 1 of the endless deliverycarrier by bolts 31.

The stud 28 may be turned in the arm 29 to secure the desired tensionfor the spring arm 26, and it is secured in such adjustment by a nut 32.The arm 29 is adjustable 1aterally along the cross-bar 30 to bring theroller 23 in alinement with its stationary sheet-v guide 8, andthe armis also rotatively adjustable on the bar 30, to adjust the device withina limited distance to sheets of diflerent lengths. A stud 33 serves toclamp the arm 29 in its desired lateral androtative adjustments. If therotative adjustment of the ,arm 29 is not sufficient, the bar 30 may beadjusted from link to link on the chains of the endless delivery carrier. In the present instance I have shown two adjacent links 34 asbeingprovided with lugs 35 for the attachment ofthe ends of thecross-bar 30.

In operation, the sheet as it comes from the press isfedthrough therollers 6, 7,

sheet support.

BEST AVAILABLE COP into position to be seized by the grippers 4, 5. ofthe endless delivery earrier. 'lhese grippers draw the sheet from thestationary 'lhe yielding device hereinbefore described. is brought intoengagement. with the tail eml ot the sheet and presses the sheet againstthe stationary sheet support. As the grippers L 5, are opened to releasethe head end of the sheet, the. tail end of tluysheet leaves thestationary sheet support and is deflected by the yielding device. Thefront sheet guide 18 serves to (letter-t. the head end of the sheet andthe sheet will thereby be deposited vertieally on to the table. in,without any tendency oi the sheet to'sag or fall ahead.

It is obvious that the delivery carrier may be provided with any desirednumber of grippers and tail end sheet engaging de-j vices, and it willbe seen that the devices may be adjusted together with the sheet supportif so desired,'-to suit sheets of different lengths.

.lVhat I. claim is: t

l. A flat sheet delivery mechanism for printingpresses including anendless delivery carrier. a sheet receiving table, a stationary sheetsupport, and means on the earlier eoaeting with said support forpreventing the sagging and falling ahead of the sheet as it is "beingdelivered onto the sheet; reeeiving table.

2. A flat. sheet delivery mechanism for printing presses int-hiding anendless delivery earrier. amstatiouary sheet support, and adjustablemeans on the earrier eoaeting with said support for preventing thesagging and t'allin; ahead of the sheet as it is being delivered. I

Ii. A llat. sheet delivery mechanism for printing presses ineluding anendless (lelivery earrier. a stationary sheet support. and yieldingmeans on the carrier eoarting with said support for preventing the sag--ging and falling ahead of the sheet as it is being delivered.

"i. A flat sheet delivery meehanismfor printing presses including anendless delivery carrierra stationary sheet support. and adjustableyielding means on. the carrier eoaeting with said support for preventingthe sagging and falling ahead of the sheet as it is being delivered.. i

i f. A llat sheet delivery printing presses including an endlessdelivery earrit arranged to travel in partly eireular and partly linearpaths and having grippers for engaging the head end of the sheet and,means on the carrier for deflecting the ta l end m.th(-* sheet as itshead end is released by said grippers.

(. A flat sheet delivery ,i'neehanis m for printing presses including anendless delivery carrier having grippers for engaging the headtend ol'the sheet, and adpistable means mechanism forprinting presses includingan endless dclivery earrier arranged to travel. in partly circular andpartly linear paths and having grippers for engaging the head end of thesheet, and yielding means on the carrier for deflecting the tail end ofthe sheet as its head end is released by said grippers.

8. A flat sheet delivery mechanism for printing; presses including anendless delivery carrier having grippers for engaging the head end ofthe sheet, and adjustable 30 \'ielding means on the carrier fordeflectin'g'the tail end of the sheet as its head end is released bysaid grippers.

9. A flat sheet delivery mechanism for printing presses including anendless de- 35 livery carrier having grippers for engaging the head endof the sheet. a stationary sheet support and means on the carrier forengaging the tail end of the sheet as it is drawn along the stationarysupport and for defleeting the tail end of the sheetas it leaves saidsupport and as its head end is released by said grippers.

it). A flat sheet delivery mechanism for irinting )resses includin anendless de-.95

livery carrier having grippers for engaging the head end-of the-sheet, astationary sheet support, and adptstahle means on the carrier forengaging the: tail end of-the sheet and for deflecting the tail end ofthe sheet as it leaves said support and as its head end is released bysaid grippers.

11. A flat sheet delivery mechanism for printing presses including anendless deliverv carrier having grippers for engaging the head end ofthe sheet, a stationary sheet suppo'rt, and yielding means ,on thecarrierfor engaging the tail end of the sheet as it is drawn along thestationary suppoit and. 11a for deileeting the tail end of the sheet asit leaves said support and as its head end isreleased by said grippers;

12. A flat sheet delivery mechanism for printing presses including anendless de-"llb livery earrier having grippers for engaging the head endof the sheet, a. stationary sheet support. and adjustable yielding meanson the carrier for engaging the tail end of the sheet as it is drawnalong the stationary support and for deflecting the tail end of thesheet as it leaves said support and as its head end is released by saidgrippers.

anism for. printing presses inoludinganendless de-' 13; A flat sheetdelivery mec liverycarrier a stationary sheet support in eluding a guideover which the sheet is' drawn by said carrier and a yielding device onthe. earrier including a sprin -acttiated roller for pressing the tailend 0 the sheet as it is drawn along the stationary support 100 l1vcrycarrier, a statidnar 1 25, roller for pressing v M against said guidesand for deflecting the tail end of the sheet after it leaves said guideto v 30 for adjusting able along the sauna. an

against said guide and for deflecting the; ail end of the sheet after itleaves said guide "to prevent the sagging and falling ahead of the sheetas it is being delivered.

14. A flat Sheet delivery mechanism for printing presses inluding anendless desheet support ineluding a guide over which the sheet is drawnby said carrier and a yielding device on the carrier includingaspring-actuated roller for pressing the tailend of the sheet againstsaid guide and for deflecting the tail end of the sheet after it leavessaid guide to prevent the saggin printing presses including an endlessdelivery carrier, a stationary sheet support-in eluding a guide overWhich 5 the sheet is drawn by said carrier and a yielding device on thecarrier -including a s irijng-actuated the tail end 6f the sheet preventthe sagging and falling ahead of the sheet as it is being delivered,audmeans the stationary sheet support for sheets of different lengths.

16. A flat sheet delivery mechanism for printing presses includingendless delivery carrier, a stationary sheet support in eluding a guide"over which the sheet is drawn by said carrier and a yielding device onthe carrier including a spring actuated roller for pressing the tail endof the sheet against said guidei and for deflecting the tail end of thesheet after it leaves said guide to prevent the sagging and fallingahead of the sheet as it is being delivered, and means for adjustingboth the yielding device and the stationary shee u support for sheets ofdifferent lengths.

17. A ilat sheet delivery mechanism for printing pressesfl including anendless deliv ery carrier, a stationary sheet support, and means on'thecarrier coacting with said sup 5) port and sheet for preventing thesagging and falling ahead of the slieet as it is being delivered, saidmeans including a cross-bar secured to the carrier, an arm-I, mounted onsaid cross-bar, a spring arm secured to said crossbar arm and a rollercarried by said spring arm.

18. A flat sheet delivery mechanism for, printing presses including areendless delivery carrier, a stationary sheet support,

and means on the carrier coacting with said support and sheet forpreventing the sagging and falling ahead of the sheet asit beingdelivered: said, means including a crossbar secured to the carrier andadjustarin lllfllljltfll on aid and falling ahead of 15 the sheet as itis being delivered, and means laterally and rotatively cross-bar, aspring arm secured to said crossbar," arm and a roller carried by saidspring arm. l

19. A flat sheet delivery" mechanism for printing presses including anendless delivery carrier, a stationary sheet support, and means on thecarrier coacting with said support and sheet for preventing the saggingand falling ahead of the sheet as it is being delivered, said meansincluding a cross bar secured to the carrier, an arm mounted on saidcross-bar and adjustable thereon, a spring arm secured to said crossbararm and a roller carried by said spring arm.

2'20. A fiat sheet delivery mechanism for printing presses including anendless delivery carrier, a stationary sheet support, and means on thecarriercoacting with said support and sheet for preventing the saggingand falling ahead of the sheet as it is being delivered, said meansincluding a. crossbar secured to-"the carrier and adjustable along thesame, an arm mounted on said crossbar and adjustable thereon, a springarm secured to said crossbar arm and a roller carried by said springarm.

"21. A fiat sheet delivery mechanism for printing presses including anendless sheet delivery carrier, a stationary sheet support and means onthe carrier coacting with said support and sheet for preventing thesagging and falling ahead of the sheet as it is being delivered, saidmeans including a cross-bar secured to said carrier, an arm adjustableon said cross-bar, a spring arm secured to said cross bar arm and aroller carried by said spring arm.

22. A flat sheet delivery mechanism for printing presses including anendlessdelivery carrier, a stationary sheet support and means on thecarrier coacting With said support and sheet for preventing the sagging?and falling ahead being delivered, said means including a crossbarsecured to said carrier, an arm mounted on. said crossbar, a spring armrotatively adjustable on and a roller carried by said spring arm.

A flat sheet delivery mechanism for printing presses including anendless delivery carrier, a stationary sheet support, andmeans on thecarrier coacting with said support and sheet for preventing the saggiugand falling ahead of the being delivered, said means including aspring-actuated roller.

of the sheet as it is said cross-bar arm,

sheet as it is actuated roller, and means for adjusting the springtension of said roller.

25. A fiat sheet delivery mechanism for printing presses including anendless delivery carrier, a stationary sheet support,

' and means on the carrier" coacting with said support and sheet forpreventing the sagging and falling ahead of the sheet as it is beingdelivered, said means including a spring-actuated roller and means foradjnst- 10 ing the position of the roller to accommodate it to sheets ofdifferent lengths.

In testimony, that. I claim the foregoing as my invention, I have signedmy'name this tenth day of September, A. D. 1915.

' HOWARD M. BAR-BER.

